(19)

(11)

EP 2 074 758 A1

(12)

(43) Date of publication: 01.07.2009 Bulletin 2009/27 (21) Application number: 07820671.1 (22) Date of filing: 28.09.2007

(51) International Patent Classification (IPC):  H04L 12/437(2006.01) (86) International application number: PCT/EP2007/060283 (87) International publication number: WO 2008/037781 (03.04.2008 Gazette 2008/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 29.09.2006 EP 06020609 (71) Applicant: Nokia Siemens Networks GmbH & Co. KG 81541 München (DE)	(72) Inventor: DE FRIAS REBELO NUNES, Pedro Ricardo 2795016 Linda-a-Velha (PT)